[jpfletch1]

I am curious as to how you tell the difference between different grades of bolts.I just received an engine back from the builder and was curious as to why some of the bolts were different. On the intake manifold most of them are chrome looking and 2 of them are gold color. I thought the gold color indicated a grade 8 bolt . Is there any reason the bolts on the intake manifold should not all be the same. Additional question is, does it matter what grade bolts hold on the manifold, water pump, fuel pump ect.